From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luis Chamberlain Date: Fri, 29 May 2020 07:41:07 +0000 Subject: [Ocfs2-devel] [PATCH 12/13] sysctl: add helper to register empty subdir In-Reply-To: <20200529074108.16928-1-mcgrof@kernel.org> References: <20200529074108.16928-1-mcgrof@kernel.org> Message-ID: <20200529074108.16928-13-mcgrof@kernel.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: keescook@chromium.org, yzaikin@google.com, nixiaoming@huawei.com, ebiederm@xmission.com, axboe@kernel.dk, clemens@ladisch.de, arnd@arndb.de, gregkh@linuxfoundation.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, airlied@linux.ie, daniel@ffwll.ch, benh@kernel.crashing.org, rdna@fb.com, viro@zeniv.linux.org.uk, mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, vbabka@suse.cz, sfr@canb.auug.org.au, jack@suse.cz, amir73il@gmail.com, rafael@kernel.org, tytso@mit.edu Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, julia.lawall@lip6.fr, Luis Chamberlain , akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, ocfs2-devel@oss.oracle.com The way to create a subdirectory from the base set of directories is a bit obscure, so provide a helper which makes this clear, and also helps remove boiler plate code required to do this work. Signed-off-by: Luis Chamberlain --- include/linux/sysctl.h | 7 +++++++ kernel/sysctl.c | 16 +++++++++++++--- 2 files changed, 20 insertions(+), 3 deletions(-) diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 33a471b56345..89c92390e6de 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -208,6 +208,8 @@ extern void register_sysctl_init(const char *path, struct ctl_table *table, extern struct ctl_table_header *register_sysctl_subdir(const char *base, const char *subdir, struct ctl_table *table); +extern void register_sysctl_empty_subdir(const char *base, const char *subdir); + void do_sysctl_args(void); extern int pwrsw_enabled; @@ -231,6 +233,11 @@ inline struct ctl_table_header *register_sysctl_subdir(const char *base, return NULL; } +static inline void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ +} + static inline struct ctl_table_header *register_sysctl_paths( const struct ctl_path *path, struct ctl_table *table) { diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f9a35325d5d5..460532cd5ac8 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -3188,13 +3188,17 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, { } }; - if (!table->procname) + if (table != sysctl_mount_point && !table->procname) goto out; hdr = register_sysctl_table(base_table); if (unlikely(!hdr)) { - pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", - base, subdir, table->procname); + if (table != sysctl_mount_point) + pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", + base, subdir, table->procname); + else + pr_err("failed when creating empty subddirectory %s/%s\n", + base, subdir); goto out; } kmemleak_not_leak(hdr); @@ -3202,6 +3206,12 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, return hdr; } EXPORT_SYMBOL_GPL(register_sysctl_subdir); + +void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ + register_sysctl_subdir(base, subdir, sysctl_mount_point); +} #endif /* CONFIG_SYSCTL */ /* * No sense putting this after each symbol definition, twice, -- 2.26.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9CB8FC433E0 for ; Fri, 29 May 2020 08:06:23 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 561CB206A4 for ; Fri, 29 May 2020 08:06:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 561CB206A4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49YHFn1txtzDqGq for ; Fri, 29 May 2020 18:06:21 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=209.85.216.65; helo=mail-pj1-f65.google.com; envelope-from=mcgrof@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=fail (p=none dis=none) header.from=kernel.org Received: from mail-pj1-f65.google.com (mail-pj1-f65.google.com [209.85.216.65]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49YGj351hfzDqYL for ; Fri, 29 May 2020 17:41:27 +1000 (AEST) Received: by mail-pj1-f65.google.com with SMTP id ci21so847509pjb.3 for ; Fri, 29 May 2020 00:41:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DDbHuQyYpIA+NrKXcOMmKPCGJcWzsoGwYaKrbY/Qlik=; b=VWqA0uVxhc/ZjupIIY3itLe8lIfh+T3po8W67FM7WRURtU9sIkA8PK2UgU2EjdgFg8 iCF3HXqjfh5ncunfke2JWgu4gz3kGD3lq8iAHQA9Sqcj55UDqfLbG2esA5JXCVtol8E6 D0Av0V3lR/ONVttrfrmvhxxt71w/2XoQruKPfIBhmFLVssV435HbbZyqUnIV57ULes52 zFHCIKpVbDygayc9F9Vwv1dgvgE5sduUcfUElOmpJ2m7sA+IBU6yjhupeg3HlLtCFwhv 3qYKCGLjaVSNrklkxu3UATmjlvZHuv5mffrO4LQCUKIq5DnrVJryuFrSKeF9UwwPidw6 k3pA== X-Gm-Message-State: AOAM531BsGhYEonIXhtQCh2pj+6tmhWdmOCosEeTF9zzZIEHsrq6imd2 VpvqxKEc3Qi4NZs9e2AfXrw= X-Google-Smtp-Source: ABdhPJwGzuqDcH6Vkxqbl1C5ZMUAQstwFZ+JipZBre8wnuBfBUsU2v0rs/LBQURtmvm2RkRrx2hGlQ== X-Received: by 2002:a17:90a:fe0c:: with SMTP id ck12mr973724pjb.209.1590738085315; Fri, 29 May 2020 00:41:25 -0700 (PDT) Received: from 42.do-not-panic.com (42.do-not-panic.com. [157.230.128.187]) by smtp.gmail.com with ESMTPSA id t201sm3703652pfc.104.2020.05.29.00.41.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2020 00:41:16 -0700 (PDT) Received: by 42.do-not-panic.com (Postfix, from userid 1000) id 08CEC42394; Fri, 29 May 2020 07:41:11 +0000 (UTC) From: Luis Chamberlain To: keescook@chromium.org, yzaikin@google.com, nixiaoming@huawei.com, ebiederm@xmission.com, axboe@kernel.dk, clemens@ladisch.de, arnd@arndb.de, gregkh@linuxfoundation.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, airlied@linux.ie, daniel@ffwll.ch, benh@kernel.crashing.org, rdna@fb.com, viro@zeniv.linux.org.uk, mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, vbabka@suse.cz, sfr@canb.auug.org.au, jack@suse.cz, amir73il@gmail.com, rafael@kernel.org, tytso@mit.edu Subject: [PATCH 12/13] sysctl: add helper to register empty subdir Date: Fri, 29 May 2020 07:41:07 +0000 Message-Id: <20200529074108.16928-13-mcgrof@kernel.org> X-Mailer: git-send-email 2.23.0.rc1 In-Reply-To: <20200529074108.16928-1-mcgrof@kernel.org> References: <20200529074108.16928-1-mcgrof@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, julia.lawall@lip6.fr, Luis Chamberlain , akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, ocfs2-devel@oss.oracle.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" The way to create a subdirectory from the base set of directories is a bit obscure, so provide a helper which makes this clear, and also helps remove boiler plate code required to do this work. Signed-off-by: Luis Chamberlain --- include/linux/sysctl.h | 7 +++++++ kernel/sysctl.c | 16 +++++++++++++--- 2 files changed, 20 insertions(+), 3 deletions(-) diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 33a471b56345..89c92390e6de 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -208,6 +208,8 @@ extern void register_sysctl_init(const char *path, struct ctl_table *table, extern struct ctl_table_header *register_sysctl_subdir(const char *base, const char *subdir, struct ctl_table *table); +extern void register_sysctl_empty_subdir(const char *base, const char *subdir); + void do_sysctl_args(void); extern int pwrsw_enabled; @@ -231,6 +233,11 @@ inline struct ctl_table_header *register_sysctl_subdir(const char *base, return NULL; } +static inline void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ +} + static inline struct ctl_table_header *register_sysctl_paths( const struct ctl_path *path, struct ctl_table *table) { diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f9a35325d5d5..460532cd5ac8 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -3188,13 +3188,17 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, { } }; - if (!table->procname) + if (table != sysctl_mount_point && !table->procname) goto out; hdr = register_sysctl_table(base_table); if (unlikely(!hdr)) { - pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", - base, subdir, table->procname); + if (table != sysctl_mount_point) + pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", + base, subdir, table->procname); + else + pr_err("failed when creating empty subddirectory %s/%s\n", + base, subdir); goto out; } kmemleak_not_leak(hdr); @@ -3202,6 +3206,12 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, return hdr; } EXPORT_SYMBOL_GPL(register_sysctl_subdir); + +void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ + register_sysctl_subdir(base, subdir, sysctl_mount_point); +} #endif /* CONFIG_SYSCTL */ /* * No sense putting this after each symbol definition, twice, -- 2.26.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18776C433EB for ; Fri, 29 May 2020 07:41:53 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EC0412074D for ; Fri, 29 May 2020 07:41:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EC0412074D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2BE496E894; Fri, 29 May 2020 07:41:30 +0000 (UTC) Received: from mail-pj1-f67.google.com (mail-pj1-f67.google.com [209.85.216.67]) by gabe.freedesktop.org (Postfix) with ESMTPS id C57956E88C; Fri, 29 May 2020 07:41:25 +0000 (UTC) Received: by mail-pj1-f67.google.com with SMTP id nm22so121833pjb.4; Fri, 29 May 2020 00:41:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DDbHuQyYpIA+NrKXcOMmKPCGJcWzsoGwYaKrbY/Qlik=; b=ZmtGiyqZqp+miGQ3pxjnxGtCrR3spOwaRNDYT7EnpLElpfCjRFoPtXTWbO1MGCa/y0 s3SvcRza7tR0OYVnlwgNU4RY06l27evsV59v0dIwFXEsfewRkFbpEEGMn7PqpP4iaXiE vwT++xZGoloNorwaZSRJwiZblNynjbPRQxusPZ5SOZaxkltk2vS8Ntw4hfANr8DpgoNV 9s7Zzvkp47YsRUTrhaBbrQhZTBCZZwCmGaw9S6nfkIoTQ5fB6pJKu5kXuUBTEDwZRluB 7MSwYdyjQZCSH4X9BSVBIqZ2RZ5g1HZ999a1ofmMzEp/JI1IgU8SxinWYprwvpbwjsr2 wMkQ== X-Gm-Message-State: AOAM533L9O3sHtUTsfo104JIZbUA5BkbARrcCZgwYptYgImtm5SbSDii MaiQvKHFlsCC5V4B5HpgA8E= X-Google-Smtp-Source: ABdhPJwGzuqDcH6Vkxqbl1C5ZMUAQstwFZ+JipZBre8wnuBfBUsU2v0rs/LBQURtmvm2RkRrx2hGlQ== X-Received: by 2002:a17:90a:fe0c:: with SMTP id ck12mr973724pjb.209.1590738085315; Fri, 29 May 2020 00:41:25 -0700 (PDT) Received: from 42.do-not-panic.com (42.do-not-panic.com. [157.230.128.187]) by smtp.gmail.com with ESMTPSA id t201sm3703652pfc.104.2020.05.29.00.41.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2020 00:41:16 -0700 (PDT) Received: by 42.do-not-panic.com (Postfix, from userid 1000) id 08CEC42394; Fri, 29 May 2020 07:41:11 +0000 (UTC) From: Luis Chamberlain To: keescook@chromium.org, yzaikin@google.com, nixiaoming@huawei.com, ebiederm@xmission.com, axboe@kernel.dk, clemens@ladisch.de, arnd@arndb.de, gregkh@linuxfoundation.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, airlied@linux.ie, daniel@ffwll.ch, benh@kernel.crashing.org, rdna@fb.com, viro@zeniv.linux.org.uk, mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, vbabka@suse.cz, sfr@canb.auug.org.au, jack@suse.cz, amir73il@gmail.com, rafael@kernel.org, tytso@mit.edu Subject: [PATCH 12/13] sysctl: add helper to register empty subdir Date: Fri, 29 May 2020 07:41:07 +0000 Message-Id: <20200529074108.16928-13-mcgrof@kernel.org> X-Mailer: git-send-email 2.23.0.rc1 In-Reply-To: <20200529074108.16928-1-mcgrof@kernel.org> References: <20200529074108.16928-1-mcgrof@kernel.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, julia.lawall@lip6.fr, Luis Chamberlain , akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, ocfs2-devel@oss.oracle.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The way to create a subdirectory from the base set of directories is a bit obscure, so provide a helper which makes this clear, and also helps remove boiler plate code required to do this work. Signed-off-by: Luis Chamberlain --- include/linux/sysctl.h | 7 +++++++ kernel/sysctl.c | 16 +++++++++++++--- 2 files changed, 20 insertions(+), 3 deletions(-) diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 33a471b56345..89c92390e6de 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -208,6 +208,8 @@ extern void register_sysctl_init(const char *path, struct ctl_table *table, extern struct ctl_table_header *register_sysctl_subdir(const char *base, const char *subdir, struct ctl_table *table); +extern void register_sysctl_empty_subdir(const char *base, const char *subdir); + void do_sysctl_args(void); extern int pwrsw_enabled; @@ -231,6 +233,11 @@ inline struct ctl_table_header *register_sysctl_subdir(const char *base, return NULL; } +static inline void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ +} + static inline struct ctl_table_header *register_sysctl_paths( const struct ctl_path *path, struct ctl_table *table) { diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f9a35325d5d5..460532cd5ac8 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -3188,13 +3188,17 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, { } }; - if (!table->procname) + if (table != sysctl_mount_point && !table->procname) goto out; hdr = register_sysctl_table(base_table); if (unlikely(!hdr)) { - pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", - base, subdir, table->procname); + if (table != sysctl_mount_point) + pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", + base, subdir, table->procname); + else + pr_err("failed when creating empty subddirectory %s/%s\n", + base, subdir); goto out; } kmemleak_not_leak(hdr); @@ -3202,6 +3206,12 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, return hdr; } EXPORT_SYMBOL_GPL(register_sysctl_subdir); + +void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ + register_sysctl_subdir(base, subdir, sysctl_mount_point); +} #endif /* CONFIG_SYSCTL */ /* * No sense putting this after each symbol definition, twice, -- 2.26.2 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F83CC433E8 for ; Fri, 29 May 2020 07:41:50 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E328A20810 for ; Fri, 29 May 2020 07:41:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E328A20810 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0E8076E87A; Fri, 29 May 2020 07:41:27 +0000 (UTC) Received: from mail-pj1-f67.google.com (mail-pj1-f67.google.com [209.85.216.67]) by gabe.freedesktop.org (Postfix) with ESMTPS id C57956E88C; Fri, 29 May 2020 07:41:25 +0000 (UTC) Received: by mail-pj1-f67.google.com with SMTP id nm22so121833pjb.4; Fri, 29 May 2020 00:41:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DDbHuQyYpIA+NrKXcOMmKPCGJcWzsoGwYaKrbY/Qlik=; b=ZmtGiyqZqp+miGQ3pxjnxGtCrR3spOwaRNDYT7EnpLElpfCjRFoPtXTWbO1MGCa/y0 s3SvcRza7tR0OYVnlwgNU4RY06l27evsV59v0dIwFXEsfewRkFbpEEGMn7PqpP4iaXiE vwT++xZGoloNorwaZSRJwiZblNynjbPRQxusPZ5SOZaxkltk2vS8Ntw4hfANr8DpgoNV 9s7Zzvkp47YsRUTrhaBbrQhZTBCZZwCmGaw9S6nfkIoTQ5fB6pJKu5kXuUBTEDwZRluB 7MSwYdyjQZCSH4X9BSVBIqZ2RZ5g1HZ999a1ofmMzEp/JI1IgU8SxinWYprwvpbwjsr2 wMkQ== X-Gm-Message-State: AOAM533L9O3sHtUTsfo104JIZbUA5BkbARrcCZgwYptYgImtm5SbSDii MaiQvKHFlsCC5V4B5HpgA8E= X-Google-Smtp-Source: ABdhPJwGzuqDcH6Vkxqbl1C5ZMUAQstwFZ+JipZBre8wnuBfBUsU2v0rs/LBQURtmvm2RkRrx2hGlQ== X-Received: by 2002:a17:90a:fe0c:: with SMTP id ck12mr973724pjb.209.1590738085315; Fri, 29 May 2020 00:41:25 -0700 (PDT) Received: from 42.do-not-panic.com (42.do-not-panic.com. [157.230.128.187]) by smtp.gmail.com with ESMTPSA id t201sm3703652pfc.104.2020.05.29.00.41.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2020 00:41:16 -0700 (PDT) Received: by 42.do-not-panic.com (Postfix, from userid 1000) id 08CEC42394; Fri, 29 May 2020 07:41:11 +0000 (UTC) From: Luis Chamberlain To: keescook@chromium.org, yzaikin@google.com, nixiaoming@huawei.com, ebiederm@xmission.com, axboe@kernel.dk, clemens@ladisch.de, arnd@arndb.de, gregkh@linuxfoundation.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, airlied@linux.ie, daniel@ffwll.ch, benh@kernel.crashing.org, rdna@fb.com, viro@zeniv.linux.org.uk, mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, vbabka@suse.cz, sfr@canb.auug.org.au, jack@suse.cz, amir73il@gmail.com, rafael@kernel.org, tytso@mit.edu Date: Fri, 29 May 2020 07:41:07 +0000 Message-Id: <20200529074108.16928-13-mcgrof@kernel.org> X-Mailer: git-send-email 2.23.0.rc1 In-Reply-To: <20200529074108.16928-1-mcgrof@kernel.org> References: <20200529074108.16928-1-mcgrof@kernel.org> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 12/13] sysctl: add helper to register empty subdir X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, julia.lawall@lip6.fr, Luis Chamberlain , akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, ocfs2-devel@oss.oracle.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The way to create a subdirectory from the base set of directories is a bit obscure, so provide a helper which makes this clear, and also helps remove boiler plate code required to do this work. Signed-off-by: Luis Chamberlain --- include/linux/sysctl.h | 7 +++++++ kernel/sysctl.c | 16 +++++++++++++--- 2 files changed, 20 insertions(+), 3 deletions(-) diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 33a471b56345..89c92390e6de 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -208,6 +208,8 @@ extern void register_sysctl_init(const char *path, struct ctl_table *table, extern struct ctl_table_header *register_sysctl_subdir(const char *base, const char *subdir, struct ctl_table *table); +extern void register_sysctl_empty_subdir(const char *base, const char *subdir); + void do_sysctl_args(void); extern int pwrsw_enabled; @@ -231,6 +233,11 @@ inline struct ctl_table_header *register_sysctl_subdir(const char *base, return NULL; } +static inline void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ +} + static inline struct ctl_table_header *register_sysctl_paths( const struct ctl_path *path, struct ctl_table *table) { diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f9a35325d5d5..460532cd5ac8 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -3188,13 +3188,17 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, { } }; - if (!table->procname) + if (table != sysctl_mount_point && !table->procname) goto out; hdr = register_sysctl_table(base_table); if (unlikely(!hdr)) { - pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", - base, subdir, table->procname); + if (table != sysctl_mount_point) + pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", + base, subdir, table->procname); + else + pr_err("failed when creating empty subddirectory %s/%s\n", + base, subdir); goto out; } kmemleak_not_leak(hdr); @@ -3202,6 +3206,12 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, return hdr; } EXPORT_SYMBOL_GPL(register_sysctl_subdir); + +void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ + register_sysctl_subdir(base, subdir, sysctl_mount_point); +} #endif /* CONFIG_SYSCTL */ /* * No sense putting this after each symbol definition, twice, -- 2.26.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD288C433E1 for ; Fri, 29 May 2020 07:41:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8729C20810 for ; Fri, 29 May 2020 07:41:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590738090; bh=ooBWoW2ScNo0Dpwiny40521JXsTI824BvytHz1VpIuc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=j7JAGqXO24QYYi0F6voYQRXAvSBbny9u9UAFDjp1qQlEnH/jChsESq+V9V9oa0+jo WWUR3rfQFbsgXTnnaM+hZ6W8E7mE58l87Uwc5CYgP76zi6w+6RURqoQbLXcXLUDxVe Ofq8xyyfhp83pKakAN1raQ8bMviUbhws+1tdoXow= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726910AbgE2Hla (ORCPT ); Fri, 29 May 2020 03:41:30 -0400 Received: from mail-pl1-f195.google.com ([209.85.214.195]:39013 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726864AbgE2Hl1 (ORCPT ); Fri, 29 May 2020 03:41:27 -0400 Received: by mail-pl1-f195.google.com with SMTP id x18so766672pll.6 for ; Fri, 29 May 2020 00:41:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DDbHuQyYpIA+NrKXcOMmKPCGJcWzsoGwYaKrbY/Qlik=; b=TjG28oUEWGZjL/eIFQ4rfhWLei+vI/evW6M6yXTSd53RcNvVwHkMrKfNBxj51JDXje oqtk9lY5wnYW45eGe26L+thCvxJsAg2mLyCrx6SffX9WMLHsOgozhW3re4EERMHF8uqZ oEEEc5gb/pZhx7AFlwzTg6UAQYvEqxf06FtXF1yvjKUFIImc8bJBo8bdOzyMjpegBOG9 +6raROiRIQZ6aRu54joMWXr0TZBlHMZkQlwuksbkDD1AmzA/KWpW5Ngal0rRd1EL4/92 /9EfJ73vi71PiLTfkeysX51DQqmu4H66oeFX/D9BN5HaoeqjbhjI3CkYORDgmYwQY4Hn uD2g== X-Gm-Message-State: AOAM533ePAFt+w/WDyY9xti2pBCCrxWm2pKOZZgApA1CWNIkA54aXA5Y PmO+c0dLfi5GBpjMw0PVhrI= X-Google-Smtp-Source: ABdhPJwGzuqDcH6Vkxqbl1C5ZMUAQstwFZ+JipZBre8wnuBfBUsU2v0rs/LBQURtmvm2RkRrx2hGlQ== X-Received: by 2002:a17:90a:fe0c:: with SMTP id ck12mr973724pjb.209.1590738085315; Fri, 29 May 2020 00:41:25 -0700 (PDT) Received: from 42.do-not-panic.com (42.do-not-panic.com. [157.230.128.187]) by smtp.gmail.com with ESMTPSA id t201sm3703652pfc.104.2020.05.29.00.41.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2020 00:41:16 -0700 (PDT) Received: by 42.do-not-panic.com (Postfix, from userid 1000) id 08CEC42394; Fri, 29 May 2020 07:41:11 +0000 (UTC) From: Luis Chamberlain To: keescook@chromium.org, yzaikin@google.com, nixiaoming@huawei.com, ebiederm@xmission.com, axboe@kernel.dk, clemens@ladisch.de, arnd@arndb.de, gregkh@linuxfoundation.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, airlied@linux.ie, daniel@ffwll.ch, benh@kernel.crashing.org, rdna@fb.com, viro@zeniv.linux.org.uk, mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, vbabka@suse.cz, sfr@canb.auug.org.au, jack@suse.cz, amir73il@gmail.com, rafael@kernel.org, tytso@mit.edu Cc: julia.lawall@lip6.fr, akpm@linux-foundation.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linuxppc-dev@lists.ozlabs.org, ocfs2-devel@oss.oracle.com, linux-kernel@vger.kernel.org, Luis Chamberlain Subject: [PATCH 12/13] sysctl: add helper to register empty subdir Date: Fri, 29 May 2020 07:41:07 +0000 Message-Id: <20200529074108.16928-13-mcgrof@kernel.org> X-Mailer: git-send-email 2.23.0.rc1 In-Reply-To: <20200529074108.16928-1-mcgrof@kernel.org> References: <20200529074108.16928-1-mcgrof@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The way to create a subdirectory from the base set of directories is a bit obscure, so provide a helper which makes this clear, and also helps remove boiler plate code required to do this work. Signed-off-by: Luis Chamberlain --- include/linux/sysctl.h | 7 +++++++ kernel/sysctl.c | 16 +++++++++++++--- 2 files changed, 20 insertions(+), 3 deletions(-) diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 33a471b56345..89c92390e6de 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -208,6 +208,8 @@ extern void register_sysctl_init(const char *path, struct ctl_table *table, extern struct ctl_table_header *register_sysctl_subdir(const char *base, const char *subdir, struct ctl_table *table); +extern void register_sysctl_empty_subdir(const char *base, const char *subdir); + void do_sysctl_args(void); extern int pwrsw_enabled; @@ -231,6 +233,11 @@ inline struct ctl_table_header *register_sysctl_subdir(const char *base, return NULL; } +static inline void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ +} + static inline struct ctl_table_header *register_sysctl_paths( const struct ctl_path *path, struct ctl_table *table) { diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f9a35325d5d5..460532cd5ac8 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -3188,13 +3188,17 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, { } }; - if (!table->procname) + if (table != sysctl_mount_point && !table->procname) goto out; hdr = register_sysctl_table(base_table); if (unlikely(!hdr)) { - pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", - base, subdir, table->procname); + if (table != sysctl_mount_point) + pr_err("failed when creating subdirectory sysctl %s/%s/%s\n", + base, subdir, table->procname); + else + pr_err("failed when creating empty subddirectory %s/%s\n", + base, subdir); goto out; } kmemleak_not_leak(hdr); @@ -3202,6 +3206,12 @@ struct ctl_table_header *register_sysctl_subdir(const char *base, return hdr; } EXPORT_SYMBOL_GPL(register_sysctl_subdir); + +void register_sysctl_empty_subdir(const char *base, + const char *subdir) +{ + register_sysctl_subdir(base, subdir, sysctl_mount_point); +} #endif /* CONFIG_SYSCTL */ /* * No sense putting this after each symbol definition, twice, -- 2.26.2